Footprint-spanner



J. J. OKEEFE.-

FOOTPRINT SPANNER.

APPLICATION FILED MAY 15, 1920.

Patented Aug. 16, 1921.

FIG.C5.

FIG .I.

UNITED STATES PATENT OFFICE.

JOHN JOSEPH OKEEFE, OF KENSINGTON. NEAR SYDNEY, NEW SOUTH WALES, AUS- TRALIA, ASSIGNOR OI ONE-HALF T0 FRASN K HARTRUP PILCHER, OF KENSINGTON,

NEW SOUTH WALES, AUSTRALIA.

FOOTPRINT-SPANNER.

Application filed Kay 15,

T 0 all whom it may concern:

Be it known that I, JOHN JOSEPH OKEEFE, a subject of the Kin of Great Britain, residing at Adare, Xllison Road, Kensington near Sydney, in the State of New South ales and Commonwealth of Australia, gasworks employee, have invented anew and useful Improved F ootprint- Spanner, of which the following is a specification.

This invention relates to footprint spanners which comprise a jaw member slidable upon another jaw member and adapted to be pivoted thereto in one of a plurality of holes by a removable screw or bolt to form spanners or wrenches of various sizes generally termed a shifting spanner. And this invention has been specially devised in order to provide a footprint or shifting spanner in which the pivot screw or bolt whereby the setting is retained after adjustment is dispensed with resulting in a great saving of the time and trouble occasioned by the withdrawal and reinsertion of the pivot screw and in the prevention of the mislaying or losing of such removable and free screw as frequently happened heretofore.

This improved footprint spanner consists of a jaw member and a sector jaw member, the latter one adapted to slide on the L stem and to be pivoted on one of a plurality of adjustment holes therethrough by a locking pin or pintle on a finger or retaining strip preferably somewhat resilient and whose other end is bent around the back of the sector jaw member and pivoted in a plane at right angles to the axis of said locking pin sufliciently far therefrom to permit of said locking pin being pulled from the pivot holes and raised outwardly clear thereof leaving the jaw members free for alteration of the size of their opening.

But in order that this invention may be readily carried into practical effect an improved footprint spanner according to this invention and of preferred construction will now be described with reference to the drawings accompanying and forming part of this complete specification.

Figure 1 is a side elevation of the spanner in a set position with the locking pin in place and showing the joint of the pivot finger in section. Fig. 2 is an edge view of same showing in dotted lines the locking pin Specification of Letters Patent.

Patented Aug. 16', 1921.

1920. Serial No. 381,733.

withdrawn and the spanner ready for adjustment, while Fig. 3 is a similar view to Fig. 1 but with the locking pin withdrawn as in the adjustment ready position.

The spanner consists of sector jaw member 4 and a reversed L jaw member 5 which latter has a plurality of adjustment-holes 6 while the sector jaw member 4 has a pivot hole 7 adapted to juxtapose with any one of the holes 6. The locking pin or pintle 8 adapted to pass through the juxtaposed holes 6 and 7 has a finger or retaining strip 9 which is preferably somewhat resilient with one end fast to the outer end of the locking pin 9 or integral therewith while its other end is bent aroundthe edge of the sector member 4 and is pivotally connected thereto (by scissors pivot screw or other screw rivet or like device) substantially at right angles to the longitudinal axis of pin 8 and as will be seen sufiiciently far therefrom to permit of the said pin 8 being pulled from juxtaposed orifices 6 and 7 and be raised clear therefrom as shown by dotted lines Fig. 2 and so freeing the jaw members 4 and 5 from one another for alteration of their respective positions.

In use when the locking pin 8 is withdrawn from its orifices 6 and 7 in the jaw members 4 and 5 and adjusted to the required size of jaw opening and the orifices 6 and 7 in both jaw members 4 and 5 being so juxtaposed the locking pin 8 is pushed in the set holes 6 and 7 say by the thumb of the grasping hand until its finger 9 lies on the sector jaw member 4 and the pin 8 just projects on the other side and the wrench is ready for use without fear of the pivot joint loosening or parting. When alteration of the jaw size is desired the locking pin 8 is withdrawn from the orifices 6 and 7 by being pushed out by the finger of the grasping hand the finger 9 movingon the right angle pivot and its resiliency providing for clearance for the passage of the locking pin 8 through the holes 6 and 7 and this resiliency also provides locking power when the pin 8 is completely home in the set holes 6 and 7.

It will be understood that although the finger 9 is shown as integral with the pin or pintle 8 it may be hingedly or more or less loosely connected to the said locking pin 8 or it may have sufficient spring to enable said locking pin 8 to accurately fit'in the juxtaposed holes 6 and 7 and so preventshake and wabble of the jaws.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be operated, I declare that what I claim is":-

An adjustable spanner comprising a jaw 'member having a handle portion, a second aw member embracing the first member and cooperating therewith, a spring pivotally mounted on the back of the second'member and curved tolie flatagainst the second jaw member and a pivot pin carried by the spring to connect the two jaw members together, the pivots at opposite ends of the spring lying inplanes substantially atright angles to each other. a x

In testimony whereof I have signed my of two subscribing witnesses. V JOHN JOSEPH OKEEFE Witnesses? FRED WVALSH, PERCY NEWELL.

name to this specification in the presence 20 

